A 38-year-old woman presents with acute onset severe pain in the left groin associated with nausea and vomiting for the past 4 hours. On examination, there is a tender, irreducible swelling in the groin below and lateral to the pubic tubercle. The overlying skin is erythematous. Ultrasound confirms a **femoral hernia** with features suggestive of bowel incarceration. What is the most appropriate immediate management?